Water-tube boiler.



P. TRAINOR. WATER TUBE BOILER. APPLICATION TILED T6113 27, 1905. 921 ,3 1 3 Patented May 11, 1909.

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P. TRAINOR. WATER TUBE BOILER. APPLICATION FILED JUNE 27, 1905.

Patented May 11, 1909.

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THE NORRI; PETERS co., wnsnmcrcrv. n. c

UNITED s'rn'gs Parana cl rion.

PATRICK TRAINOR, OF NEW YORK, N. Y.

WATER-TUBE BOILER.

To all whom it may concern:

Be it known that I, PATRICK TRAINOR, a citizen of the United States, and resident of the borough of Brooklyn, in the city and State of New York, have invented a new and useful Water-Tube Boiler, of which the following is a specification.

My invention relates to a water tube boiler with the object in view of providing a boiler of this character which shall have high efficiency and in which the tubes may be renewed one or more at a time without disturbing the remaining tubes or general structure.

A practical embodiment of my invention is represented in the accompanying drawings, in which Figure 1 is a vertical section from front to rear showing a plurality of gangs of tubes, Fig. 2 is a view of the same in front elevation, Fig. 3 is a vertical transverse section in the plane of the line AA of Fig. 1, Fig. 4 is an enlarged partial transverse section in the plane of the line BB of Fig. 1, and Fig. 5 is a partial longitudinal section of a modified form in which there is a single gang of tubes as distinguished from a plurality of gangs.

Referring to the structure shown in Figs. 1 to 4 inclusive, the top of the furnace is denoted by 1, the back by 2, the front by 3 and the side walls by 4 and 5. There is a main partition 6 extending transverselyiacross between the side walls 4 and 5 and extending upwardly from the bottom of the furnace a short distance above the height of the grate bars 7 forming between it and the front wall 3 below the grate bars 7 an ash pit 8 to which access is had through a door 9 at the front. Access to the boiler chamber above the grate bars 7 is obtained through a door 10 at the front.

Within the furnace a plurality of gangs of water tubes are placed, in the present case two gangs extending from front to rear, each placed slanting with their front ends higher than their rear ends and superposed one above the other, the lower gang having a more pronounced inclination than the upper gang and each gang expanded into the flattened faces of water drums extending transversely across the furnace. The lower gang of Water tubes is denoted by 1 1 and the upper gang by 12. The lower gang 11 has the forward ends of the tubes secured in the flattened side 13 of a transverse water drum 14 Specification of Letters Patent.

Application filed June 27, 1905.

doors as is usual.

Patented May 11, 1909.

Serial No. 267,171.

supported in the front wall 3 of the furnace while their rear ends are secured in the flat face 15 of a transverse drum 16 supported in the rear wall of the furnace. The upper gang 12 has the front ends of its tubes secured in the flat face 17 of a transverse drum 18 located a short distance above the drum 14 in the front wall of the furnace and. in communication with the drum 14 through a number of short vertical tubes 19. The rear ends of the gang 12 of tubes are secured in the flat face 20 of a transverse drum 21 mounted in the rear wall of'the furnace and in communication with the drum 16 through a series of vertical tubes 22.

As a matter of construction, I find it desirable to hang the drums 18 and 21 in p0sition, the former by means of rods 23, 24, depending from brackets 25, 26, attached to vertical plates or posts 27, 28, set in the furnace walls and the latter by means of similar hangers, one of which, 29, is shown in Fig. 1, attached to its bracket 30, the latter secured to a post 31, it being assumed that there is a siniilar'support on the opposite side of the furnace for the opposite end of the rear drum 21. The upper front drum 18 is connected by means of tubes 32, 33, with a steam drum 34 from which the steam may be taken for use.

Each of the steam drums with which the gangs of water tubes are connected is provided with one or more manholes covered by In the present illustration I have shown one of these manholes in connection with each of the drums, the cover for the manhole in the drum 18 being denoted by 35, in the drum 14 by 36, in the drum 21 by 37 and in the drum 16 by 38.

It is intended to arrange the manholes covered by the several doors in a position directly opposite the central tubes of the gang and to rovide a sufficient number of these manho es throughout the length of the drum either at the front or at the rear so that any tube in the gang when loosened from the plates in which they are secured may be withdrawn by passing it endwise through the manholes at the front or rear and to further so locate these manholes that ready access may be had to either end of any tube when, for any purpose, it is desired to free it from its supporting plate for removal or for purposes of securing a new tube in place.

drums 21 and 16 are exposed through the rear wall of the furnace at the points where the manholes are located.

The space between the gangs of tubes 11 and 12 above the partition 6 is filled by means of a transverse wall 44 and the spaces between the individual tubes of the gang 12 above the partition 44 are filled by interposed pieces represented in detail in Fig. 4

and denoted, respectively, by 45 and 46,- the pieces 45 being fixed and the pieces 46 removable. These pieces 45 and 46 may be plates of suitable firebrick or other noncombustible material, suitable for the purpose and the tubes themselves are arranged in double vertical series so as to leave a little more space between each alternate two vertical series of tubes than there is between the intermediate series. For instance, a double vertical series of tubes may be made up of the series 47, 48, Fig. 4, and these two vertical series are placed nearer together horizontally than the series 49 which forms one series of the double vertical series 49, 50.

The partition piece 45 between the members of the double vertical series 47, 48, may be fixed while the partitions 46 between the adjacent members of two consecutive double series may be capable of removal leaving the tubes free, as shown in the space 51, Fig. 4, where one of the removable plates 46 has been removed, and two tubes, one from each of two adjacent series are shown moved out of position into the space left by the removal of the piece 46 to be manipulated and withdrawn for exchange or renewal. By so arranging the several partition pieces 45, 46, any one of the tubes may be brought into a free space without disturbing each alternate fixed piece 45. In like manner the spaces between the individual tubes of the gang 11 intermediate of the partitions 6 and 44 are filled by partition pieces alternately fixed and removable in the same manner as shown in Fig. 4. To further relieve the tubes, I provide on the top of the partition 6 a removable transverse support 52. Again, intermediate of the gangs of tubes 11 and 12 farther to the rear, I locate a cross artition wall 53 and above the gang of tu es 12 a cross partition wall 54.

Intermediate of the cross partition walls 53 and 54 alternately fixed and removable partition pieces are located to pitch the spaces between the individual tubes of the gang 12 in a manner quite similar to that hereinabove described and illustrated in Fig. 4 and I also fill the spaces between the individual tubes of the gang 11 below the cross wall 53 by alternate fixed and removable pieces similar to that shown and described in Fig. 4. The result of this transverse partition of the interior of the furnace is that the products of combustion from the fuel on the grate bars 7 is caused to first pass upwardly around and among the tubes of the gang 11 at the front of the furnace; thence upwardly among the tubes of the gang 12 at the front of the furnace thence rearwardly over the uppermost partition wall and downwardly again into engagement with the middle portions of the gang 12 and thence downwardly into contact with the middle portions of the gang 11; thence again upwardly into contact with the rearward portion of the gang 11; thence upwardly into contact with the rearward portion of the gang 12 and thence out through the opening 55 in the rear wall of the furnace to a suitable uptake not shown. The water is admitted to the water space of furnace through a supply pipe 56 at the top of the furnace wall, the said pipe extending thence downwardly into the top of the water drum 21. To further deflect the flames and products of combustion and cause them to remain in expanded contact with the forward portion of the gang 12 of tubes, I may locate a transverse inclined plate 57 over the front portion of the gang of tubes 12, the said plate forming in effect a deflecting plate for holding the products of combustion in intimate contact with the tubes until it finally escapes over the inter-spacing partition above the partition 44.

My theory of circulation is that the intense heat in connection with the forward portions of the gangs will tend to convert the water into steam and will tend to produce a vacuum in the drums 21 and 16 while the back pressure of the steam in the less inclined gang 12 will cause the inflowing cold water to come in contact with the highly heated water in the gang 12 and drum 21 and this cold inlet water will tend to quickly drop to the drum 16 to fill the vacuum tendency in that drum and will pass thence to the forward drum 14 and from it to the drum 18 and will become highly heated in progress and converted into steam which will escape into the steam drum 34 or back into the tubes 12 if not used where it will become superheated by the products of combustion beneath the defleeting plate 57. The circulation will thus be very rapid and the inflowing cool water will become so tempered before it reaches the high steam portions of the gangs that it will not tend to condense the steam, the result being that steam is very rapidly and economically produced while the structure as a whole is simple and the tubes capable of being replaced one or more at a time :as occasion may require without in any wise disturbing the general structure and arrangeinent as the tubes are not only accessible at their opposite ends through the water drums and the manholes therein but the interior of the furnace is accessible through one or more manholes 58 in its side walls.

In Fig. 5 I have shown a single gang 59 of water tubes engaged with the cross drum 60 and have shown the water sup 1y inlet 61 connected with the drum 60 rom which steam passes directly to the steam drum 34, a structure which may in some instances be found desirable.

What I claim is 1. A water tube boiler comprising a plurality of gangs of water tubes set at different angles of inclination to a horizontal plane, transverse water drums connected with the opposite ends of each gang, said water drums water drums at the front and the steam drum.

2. A water tube boiler comprising a plurality of gangs of removable water tubes set at different angles of inclination to a horizontal lane, transverse water drums connected wit 1 the opposite ends of each gang, said water drums being provided with flattened sides for sup orting the ends of the tubes and with u manho es opposite the flattened sides for gaining access to the tubes, a steam drum above the uppermost water drum at the front, a water feed pipe leading to the uppermost drum at the rear, and suitable pipes connecting the drums at the rear and pipes connecting the water drums at the front and the steam drum.

In testimony, that I claim the foregoing as my invention, I have signed my name in resence of two witnesses, this 22nd day of une 1905.

PATRICK TRAINOR.

W'itnesses:

FREDK. HAYNES, HENRY F. THIEME 

